Year	current US$
1995	173000000
1996	182000000
1997	203000000
1998	190000000
1999	228000000
2000	241000000
2001	383000000
2002	511000000
2003	581000000
2004	618000000
2005	816000000
2006	916000000
2007	1126000000
2008	1664000000
2009	1354000000
2010	1474000000
2011	1780000000
2012	1794000000
2013	1350000000
2014	1686000000
2015	1505000000
2016	1365000000
2017	1592000000
2018	1746000000
2019	1762000000
2020	666000000